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He without saying good-bye to them, for he always has good manners. A. mustn’t h

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He without saying good-bye to them, for he always has good manners. A. mustn’t h

He________ without saying good-bye to them, for he always has good manners.

A.mustn’t have left   B.may not leave

C.shouldn’t have left  D.can’t have left

 

试题答案

答案:D

提示:

can't不可能。